KR100542343B1 - Small-sized BSC providing flexible design and controlling method thereof - Google Patents

Abstract

The present invention relates to a private base station controller and a control method thereof, which can be miniaturized to be mounted in a rack of a private base station and can flexibly increase or decrease the number of boards mounted on a back board according to subscriber capacity. An NSB block for generating a plurality of system synchronization clocks and network synchronization clocks using the synchronization clocks received from the distribution clocks and distributing them to respective internal shelves; An ATP block for providing a match with a mobile terminal in a wireless environment; a) an ATM E1 / T1 Link Block (ALB) block providing an inter-network interface; and b) a TCB (TransCord Bank) for processing voice compressed signals transmitted from the mobile terminal through the base station and PCM data transferred to the exchange. A TAB block for mounting the block; And an MCB block for loading the corresponding OS using a backboard identifier for the NSB block, the ATP block, and the TAB block, and for switching signals and collecting all generated alarm signals.

Private Base Station Controller, Rack, Miniaturization, Boot, ATP, TAB, MCB, BMP

Description

Miniaturized base station controller providing flexible board configuration and its control method {Small-sized BSC providing flexible design and controlling method

1 is a network diagram illustrating a concept of a public and private mobile communication service according to the prior art.

2 is a block diagram of a private mobile communication service system according to the prior art.

3 is a structural diagram of a private base station controller mounted in a rack according to the prior art;

4 is a structural diagram of a miniaturized private base station controller mounted in a rack according to an embodiment of the present invention.

5 is an exemplary configuration diagram of a TAB block of FIG. 4.

6 is a flow chart of a control method of the private base station controller of FIG.

<Explanation of symbols for the main parts of the drawings>

410, 450 Shelf 420: NSB Block

421: GCRU 422: MCDA

430: ATP block 431: ACMA

432 ~ 439: BHPA 460: ASB Block

461: ACMA 462, 463: TCLA

464 ~ 466: AETA 470: MCB

471, 472: ACMA 473, 474: BHPA

475, 476: ASFA 477: HACA

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base station controller, and more particularly, to a base station controller and a control method thereof, which can be miniaturized to be mounted in a rack of a base station and can flexibly increase or decrease the number of boards mounted on a back board according to subscriber capacity.

In general, the private wired communication service for voice in the premises was serviced by a private exchange (or keyphone system), and the communication service for data was provided by a LAN switch and a router using a server.

In general, mobile communication can be serviced anywhere regardless of a limited area such as a premises, but this is to use a mobile communication service system, and wireless communication can be performed without additional charge in a set area.

In other words, in order to make a call between a terminal of a wired private exchange and a mobile terminal of a subscriber of a mobile communication service, each call was connected to a public network and then a call to a counterpart terminal.

The public network here includes a mobile communication network and a public switched telephone network. Accordingly, even if the wired subscriber and the mobile communication service subscriber were in the same building, there was an inconvenience of being charged.

Therefore, a private mobile communication service system has been developed in which a wired subscriber and a mobile communication service subscriber can make a call without being charged in the same building (the conventional mobile communication service system is called a public mobile communication service system). Distinguished from a mobile communication service system).

The developed private mobile telecommunication service system is connected to other mobile telecommunications subscribers or private exchanges registered in the private telecommunication service system without additional charge in the area where private telecommunication service is registered. By extension, they can receive each other's call service.

1 is a network diagram illustrating a concept of a public and private mobile communication service according to the prior art.

As shown in FIG. 1, in order to provide both public and private mobile communication services according to the prior art, the public / private shared cell area 114, which is a public and private shared communication service area, is provided. 112 is provided.

Base stations (BTSs) belonging to the public mobile communication service system, that is, BTSs 106-1, 106-k, 108-1 and the public / private shared cell area 114 shown as an example in FIG. The private base station 108-k is called a pBTS (private BTS) to distinguish the private base station 108-k.

The pBTS 108-k, together with the MS 124 belonging to the public / private shared cell area 114, performs functions of configuring a wireless communication path and managing radio resources, and perform a public / private communication service device 112. Is connected to a BSC of the public telecommunications service system, for example, the illustrated BSC 104-m of FIG.

The public / private communication service device 112 is connected to the BSC 104-m, the PSTN / ISDN 116, and the IP network (Internet Protocol Network) 118 of the public mobile communication service system. The public / private communication service device 112 may allow the public mobile service and the private mobile communication service to be selectively provided to MSs in the public / private shared cell area 114, for example, to the MS 124 of FIG. Perform a mobile communication service.

If the MS 124 is registered in the public / private communication service device 112 to receive the private mobile communication service, the MS 124 may be provided with the private mobile communication service as well as the public mobile communication service.

However, if the private mobile communication service registration for the MS 124 is not registered in the public / private communication service device 112, the MS 124 may receive only the public mobile communication service. The public / private communication service device 112 also performs a wired communication service with the PSTN / ISDN 116 and the IP network 118.

On the other hand, the difference between the private mobile communication service system and the public mobile communication service system is that the private base station and the private base station controller can be installed in close proximity.

2 is a configuration diagram of a private mobile communication service system according to the prior art, in which the conventional public mobile communication service system includes a base station and a base station controller, each separately installed and transmitting and receiving signals to and from each other using an E1 / T1 link. Alternatively, in the private mobile communication service system, the private base station 232 and the private base station controller 230 may be located at the same place and may be installed in close proximity.
In addition, the private mobile communication service system may mount the private base station 232 and the private base station controller 230 in one rack, and thus mount the private base station 232 and the private base station controller 230 in one rack. This can bring cost savings in constructing a private mobile communication service system.
In addition, it is possible to miniaturize the private mobile communication service system in a situation where the private mobile communication service system is mainly built indoors such as buildings.

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3 is a structural diagram of a private base station controller mounted in a rack according to the prior art.

As shown in FIG. 3, it can be seen that the private base station controller is mounted in a rack consisting of four shelves 310-340.

The first shelf 310 includes two ACMAs (ATMs) forming an ATM Switch Block (ASB) among BBSs (ABS Switch Networks) that provide communication paths between processors in a private base station controller and a communication path with a private base station and a public base station controller. Cell Mux / Demux board Assembly (Board) and vocoder are included to convert PCM data to 8K QCELP / EVRC or 13K QCELP data. In addition, eight TCLA (Transcoder Control and Link board Assembly) boards that form a TCB (Transcoder Bank) that converts QCELP or EVRC data into PCM data are mounted.

The second shelf 320 has two ACMA boards that constitute the ASB in the BAN, and functions as a main control block such as call processing of the private base station controller, No.7 signal processing, resource management in the private base station controller, and ATM link control. Two BCPA High Performance Processor board Assembly (BHPA) boards that make up a BMP (BSC Main Processor), and two ATM Switch Fabric board assemblies (ASFAs) that provide communication paths between BMPs and other processors by configuring ASBs within the BAN. Board, one Hardware Alarm Collection Board Assembly (HACA) board, which constitutes a Hardware Alarm Collection Block (HAB) that collects hardware failure information from each block in a private base station and informs it to BMP, and ALB (ATM Link) among BANs. One AS1A (ATM STM-1 interface board Assembly) board is included.

In addition, the third shelf 330 includes two GPS Clock Resiver Unit (GCRU) boards that form a network synchronization clock distribution block (NSB) that generates a network synchronization clock using the clock and time information received from the GPS and supplies the same to a required block. And three Master Clock Distribution board Assembly (MCDA) boards, two ACMA boards forming an ASB among BANs, and three AETA (ATM E1 / T1 interface board Assembly) boards forming an ALB.

In addition, the lower shelf 340 processes signals received with traffic data after two ACMA boards forming an ASB, a handoff signal, a power control signal, etc. are established in a BAN, and performs an RLP or MAC function for the data call. Eight BHPA boards that make up the ATP (Air Termination Processor).

However, in order to mount the private base station and the private base station controller in one rack, it is necessary to miniaturize the private base station controller.

In addition, in miniaturizing and mounting a private base station controller in a private base station, it is necessary to provide a flexible board design according to the installation location so that the required board can be increased or decreased according to subscriber capacity.

Accordingly, the present invention has been made to meet the above-described needs, and an object of the present invention is to be miniaturized so that it can be mounted in a private base station of a private mobile communication service system, and to meet the cost and the need for the miniaturization of a mobile communication service provider. The present invention provides a miniaturized private base station controller and a method of controlling the same, which provide flexibility in board configuration.

In addition, another object of the present invention is to provide flexibility in the configuration of the board to provide a design flexibility to increase and decrease the board required in the installation environment in installing the private base station controller of the private mobile communication service system The present invention provides a miniaturized private base station controller and a control method thereof.

According to an aspect of a miniaturized base station controller provided with board configuration flexibility according to the present invention for achieving the above object, generating a plurality of system synchronization clock and network synchronization clock using a synchronization clock received from a GPS satellite. Network Synchronization Clock Distribution Block (NSB) for distributing the contents to each shelf in the network; An air termination processor (ATP) block for matching with a mobile terminal in a wireless environment; a) an ALB (ATM E1 / T1 Link Block) providing an inter-network interface; and b) a TCB (TransCoder Bank) block for processing voice compressed signals transmitted from the mobile terminal through the base station and PCM data transferred to the exchange. A TAB block that implements the TransCode & ATM E1 / T1 Link Block; And a main control block (MCB) for loading the corresponding OS using a backboard identifier for the NSB block, the ATP block, and the TAB block, and for switching signals and collecting all alarm signals generated.
The NSB block receives a synchronization clock and time information from a GPS satellite, provides the received time information to each of the internal shelves, and generates and outputs a plurality of system synchronization clock signals based on the received synchronization clock. Clock Receiver Unit) board; And receiving and distributing a plurality of system synchronization clock signals from the GCRU board to each shelf, and generating another plurality of network synchronization clocks using the system synchronization clock received from the GCRU. Contains the main clock duplication assembly (MCDA) board for distributing.
The ATP block includes: a plurality of BHPA (BSC High Performance Processor Bord Assembly) boards that process a signal received with traffic data after the call is established with the mobile terminal and perform an RLP or MAC function for the data call; And multiplexing and outputting the ATM cell inputted from the BHPA, demultiplexing the transmitted ATM cell to the BHPA, and having an UTOPIA interface to perform ATM communication (ATM Cell Mux / Demux Board Assembly). Include board.
The plurality of BHPA boards, the first BHPA board for processing a control signal for traffic data; A second BHPA board for processing circuit data; And a third BHPA board interworking with a public data switching network (PDSN) for packet data processing.
The TAB block constitutes the ALB block, and includes an E1 interface unit, an ATM layer interface unit, and an interprocessor communication unit, and at least one AETA (ATM E1 / ATM) for transmitting and receiving ATM cells through a network connected to E1 / T1. T1 Interface Boaed Assembly Board; At least one TCLA for converting the voice compressed signal transmitted from the mobile terminal through the base station to PCM data and converting the voice compressed signal to the mobile terminal through converting the PCM data transmitted from the exchange into a voice compressed signal ( Transcode Control and Link Assembly) board.
The TAB block may include three AETA boards and two TCLA boards.
The TAB block may include two AETA boards and three TCLA boards.
In addition, the TAB block may include one AETA board and four TCLA boards.
The MCB block controls a loaded program by loading a corresponding OS and a program using a backboard number, a backboard ID, and a slot ID for the NSB block and the ATP block, and a backboard number and a backboard ID for the TAB block. A BHPA board mounted with a BMP Main Block (BMP) for controlling a loaded program by loading an OS and a program using a slot ID and a backboard ID determined according to a mounting structure of the board; An ATM Switch Fabric Board Assembly (ASFA) board having ATM switch fabrics to perform ATM switch operations; And a Hardware Alarm Cillection Board Assembly (HACA) board equipped with a Hardware Alarm Collecting Block (HAB) that collects alarm information generated in each block of the base station controller.
The BHPA board, ASFA board and HACA board has a redundant configuration, respectively. Here, the BHPA board, the ASFA board, and the HACA board having the redundant configuration may be connected by Fast Ethernet.
The backboard ID corresponds to the mounting number of the TCLA board.
On the other hand, according to an aspect of the control method of the miniaturized base station controller provided with flexibility in the configuration of the board according to the present invention, when power is applied to the base station controller, BMP (BSC Main Proccessor) BP (Power on Self Test) Checking the state of the board by performing; The BMP searching for a board to be booted and reading board configuration information (PCI Configuration) for the found board from a database; Determining whether a board to be booted belongs to a TAB block by checking a backboard ID and a slot ID of the read board setting environment information; a) if the board to be booted belongs to the TAB block as a result of the determination, check the corresponding OS by using the backboard number and ID in the board setting environment information, and load the identified OS onto the board to perform booting, and b As a result of the determination, when the board to be booted does not belong to the TAB block, the board is configured to check a corresponding OS using a board number and a slot ID in the board configuration environment information, and load the identified OS onto the board to perform booting. It may include a step.
The step of reading the board setting environment information from the database, the BMP requires a selection key value for selecting a board to boot the board if the hardware of the board is not abnormal, and searching whether there is a board to be booted : When a board to be booted is found as a result of the search, searching for a board setting environment information of the corresponding board in a database.
Hereinafter, a miniaturized base station controller provided with flexibility in board configuration and a control method thereof according to the present invention will be described with reference to the accompanying drawings.

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4 is a structural diagram of a miniaturized private base station controller mounted in a rack according to an embodiment of the present invention.

As shown in FIG. 4, the miniaturized private base station controller according to an embodiment of the present invention is mounted in a 19 rack rack integrated with a private base station (pBTS), and has a total of 2 shelf / 4 blocks ( 1 shelf is 6U (1U = 44.45mm).

The private base station controller is mounted on two shelves, each of which can have 13 boards.

The unique functions of the private base station controller are implemented in each board, and these boards may be newly mounted or dismounted by the operator in operation.

The first block 420 of the upper shelf 410 of the two shelves is an NSB block (Network Synchronization Clock Distribution Block), and the second block 430 is an Air Termination Processor (ATP) block for matching with a mobile terminal in a wireless environment. to be.

The first block 460 of the lower shelf 450 is a Transcoder and ATM link interface block (TAB) block formed by combining a TCB (Transcoder Bank) and an ALB (ATM Link interface Block), and the second block 470 is a pBSC. It is the main control block (MCB) that performs the overall control of ATM and ATM switching and collects all alarm signals inside pBSC.

The NSB block, which is the first block 420 of the upper shelf 410, has four slots 421-424, and the ATP block, which is the second block 430, has nine slots 431-439.

The NSB block 420 generates a network synchronizer clock based on a clock (1PPS) and time information (TOD) received from a GPS satellite, and distributes it to a private base station controller and a private base station.

NSB block 420 is a GPS Clock Receiver Unit (GCRU) board 421 that receives the synchronous clock and time information from the GPS satellites and generates a high-precision 4.096 MHz, 1.544 MHz, even second (0.5 Hz) signal Main Clock Duplication Assembly (MCDA) board 423 that receives the synchronous clock from the GCRU board 421, re-aligns the received clock, generates 8KHz and even second signals, and sends them to each shelf in the private base station and the private base station controller. It consists of.

The GCRU board 421 transmits the received TOD information to the BMPs 473 and 474, and the BMPs 473 and 474 transmit the TOD information to all other blocks 430 and 460 in real time.

In this case, in order to reduce the cost and size of the private mobile communication service system, one GCRU 421 is used to receive synchronization clock and time information from a GPS satellite through a GPS antenna and simultaneously supply the private base station controller and the private base station.

The GCRU board 421 may receive the location information coordinates from three or more global position system (GPS) satellites to measure accurate time and distance, and then calculate the current position by triangulating three different distances.
In general, the GCRU board 421 is provided with a reference clock generation device for generating a system clock using the time information provided from the GPS satellites.

GPS module for generating and outputting a 10 MHz clock signal through the internal PLL unit by receiving the position coordinate signal and time information transmitted from the GPS satellite located above the base station in the reference clock generator provided in the GCRU board 421, and from the GPS module. The phase synchronization loop unit generates a system clock signal of 4.096 MHz, 1.544 MHz, and even second (0.5 Hz) signals using an applied 10 MHz clock signal.

The GCRU board 421 outputs a system clock signal generated by the reference clock generator to the MCDA board 423.

The MCDA board 423 resets the phase of the clock received from the GCRU 421 and generates 8KHz and even second signals and supplies them to each shelf in the private base station and the private base station controller.

The clock type and the number of ports output from the MCDA board 423 are as follows.

4.096MHz: 16 ports for hardware blocks of pBSC and pBTS

1.544MHz: 4 ports for AETA block of pBSC

8kHz: 12 ports for hardware blocks of pBSC and pBTS

4) Even second: 16 ports for hardware blocks of pBSC and pBTS

Meanwhile, each board of the private base station and the private base station controller performs a call processing function of the mobile terminal received in synchronization with a clock signal transmitted from the MCDA 423.

Next, the ATP block 430 performs voice and data call processing functions, power control and handoff functions, and performs MAC control and RLP functions for data services.

The ATP block 430 is in charge of the air interface inside the pBSC, and has 6 ACMA (ATM Cell Mux / Demux board Assembly) boards 431 and 6 ~ that provide communication paths of the ASFAs 475 and 476. It consists of eight BHPA (BSC High Performance Processor board Assembly) boards (432 ~ 439). When the hermetic BHPA boards (432 ~ 439) are installed, the power will be supplied. Configurations in ˜439) perform initialization.

In this case, the initialization is performed after a predetermined time has elapsed from the time when the power is supplied. The reason is that the operation is performed after each component is stabilized after the initial power is applied.

The ACMA board 431 of the ATP block 430 performs a multiplexing / demultiplexing function and an UTOPIA interface function of the ATM cell to provide a communication path with the ASFAs 475 and 476.

The BHPA boards 432 to 439 of the ATP block 430 include two BHPA boards 432 and 433 for processing control signals for traffic data, two BHPA boards 434 and 435 for processing circuit data, and packet data. It consists of two BHPA sheets 436 and 437 linked with a PDSN (Public Data Switching Network) for processing. The two sheets 438 and 439 are reserved for future EV-DO.

Two BHPA sheets 436 and 437 interworking with the PDSN for packet data processing use a MAC layer to transmit / receive packet data over a wireless section.

The MAC layer is provided in each of the mobile terminal and the private base station controller, and the radio link protocol (RPP) is referred to as the ENTID and the radio burst protocol (RPP). It includes an entity.

RLP is a suitable protocol when a large amount of data must be continuously transmitted. The RLP is used to transmit data through a dedicated traffic channel. In addition, RBP is a protocol suitable for intermittent bursty data transmission, and is used when transmitting data through a common traffic channel or a dedicated MAC channel.

And the Mac layer doesn't create RLP entities and RBP entities at the same time. The MAC layer performs an efficient channel allocation operation for transmitting packet data according to a channel resource situation.

At this time, the MAC layer transitions various data and signaling signals input according to the higher quality of the layer and the multiplexed or demultiplexed signals according to the request for the quality of service and reliability of the upper layer.

The TAB block, which is the first block 460 of the second shelf 450, is an ALB (ATM E1 / T1 Link Block) block 464 ~ that provides an E1 / T1 link for connection with a private base station controller and a public base station controller. 466) and a TCB (TransCorder Bank) that converts a voice compressed signal received through a private base station from a mobile terminal into 64k PCM data using a digital signal processor and transmits it to a PABX via an E1 / T1 link or vice versa. ) Is a block in which the blocks 462 and 463 are combined.

Referring to FIG. 3, which is a rack structure of a private base station controller according to the prior art, it can be seen that the TCB block is mounted on the uppermost shelf 310, and it can be seen that it consists of two ACMA boards and eight TCLA boards. .

3, the ALB block is located on the right side of the third shelf 330 from above, and it can be seen that the ALB block is composed of two ACMA boards and three ATEA boards.

However, in the present invention, unlike the existing high-capacity public base station, in order to downsize the private base station controller, the ALB blocks 464 to 466 and the TCB blocks 462 and 463 are mounted in one TAB block (TAB + ALB) 460. In other words, the backboard is shared so that the TCLA boards 462 and 463 and the AETA boards 464 to 466 can be mutually increased or decreased according to the subscriber capacity.

At this time, as the ALB blocks 464 to 466 and the TCB blocks 462 and 463 are mounted in one TAB block 460, at least one of the ACMA boards 461 may be shared to mount at least one. It is different from the board being mounted.

The TAB (TCB + ALB) block 460 is composed of five slots, which can be configured from 2TCLA + 3 AETA to 4TCLA + 1AETA according to subscriber capacity.

5A to 5C are structural diagrams of the TAB block of FIG. 4, and FIG. 5A is composed of one ACMA board, two TCLA boards, and three AETA boards, and FIG. 5B shows one ACMA board and three It consists of one TCLA board and two AETA boards. FIG. 5C shows one ACMA board, four TCLA boards, and one AETA board.

However, when the ALB blocks 464 to 466 and the TCB blocks 462 and 463 are mounted in one TAB block 460, the clock signals used between the two boards are different.

In order to solve this problem, two clock cables were used to supply clocks to the TCLA boards 462 and 463 and the AETA boards 464 to 466 in the MCDA 423 of the NSB block 420.

In this way, since the clock signals required by the TCLA boards 462 and 463 and the AETA boards 464 to 466 are supplied, respectively, the clock signals used between the two boards can be solved.

Here, the ALB blocks 464 to 466 not only provide a communication path between the private base station and the private base station controller but also provide a communication path between the public base station controller and the private base station controller.

 That is, the ALB blocks 464 to 466 are located between the private base station and the private base station controller, and between the public base station controller and the private base station controller to support all data exchange by a BAN (BSC ATM switch Network) composed of ATM switches. In addition, it supports access by ATM-E1 / T1 in the private base station and the private base station control period and the public base station controller and the private base station control period.

Each ATM E1 / T1 interface board assembly (AETA) board 464-466 of the ALB blocks 464-466 includes an E1 interface unit, an ATM layer interface unit, and an interprocessor communication unit. It is connected to the base station and E1 / T1 to transmit and receive ATM cells.

That is, the AETA boards 464 to 466 transmit the ATM cells received from the public private base station controller or the private base station to the BMPs 473 and 474 through the ACMA 461 or the ACMAs 461 at the BMPs 473 and 474. It transmits the ATM cell received through the public private base station controller or private base station.

Here, the E1 interface parts of the AETA boards 464 to 466 are composed of a line interface part LIU and an E1 frame generation part E1 framer, and are directly connected to the private base station or the public private base station controller through the E1 interface part. The E1 interface unit arranges data in E1 format and detects various alarms.

The ATM layer interface unit receives the data stream in the E1 format from the E1 interface, assembles it into 53 byte cells, and conversely decomposes the ATM cell and delivers the E1 stream to the E1 interface unit.

The interprocessor communication unit is composed of a FIFO for exchanging various information between the processor in the board and the processor of the other block, and exchanges information with another board in units of ATM cells.

The E1 interface device is a board designed to transmit and receive data in a private base station controller and a private base station or public private base station control period. The data transmission and reception specification is designed in the CEPT (E1) method.

The bipolar signal input at a rate of 2048 Kbps through the transmission line is converted into a digital signal through the shaping circuit of the line interface unit (LIU). In addition, the line interface unit extracts the clock and PCM data from the signal input through the transmission line, decodes it to HDB3 (High Density Bipolar 3), checks the bipolar error LOS (Loss Of Signal), and delivers it to the E1 frame generator.

The E1 frame generator arranges the frames according to the E1 format, reports various frame-related alarm information, and delivers them to the ATM layer interface unit. Then, the ATM layer interface unit assembles 30 channel data except for timeslots 0 and 16 into 53-byte ATM cells in the received E1 frame.

That is, the ATM layer interface unit transfers the ATM cell to the ACMA board 461 via a 4-cell FIFO, which follows the Universal Test and Operation Physical Interface for ATM (UTOPIA) connection protocol.

The ACMA board 461 multiplexes an ATM cell inputted from an ATM layer interface unit or an interprocessor communication unit of the TCLAs 462 and 463 and the AETAs 464 to 466, and transmits the multiplexed ATM cells through the ASFA boards 475 and 476.

In addition, the ACMA board 461 also checks the VPI (Virtual Path Identifier) and the VCI (Virtual Channel Identifier) for the ATM cell received from the other block. Alternatively, it is distributed to the FIFO of the interprocessor communication unit. The cell transmitted to the ATM layer interface unit is converted into an E1 stream, transmitted to the private base station or the public private base station controller through the E1-ATM interface, and transferred to the interprocessor communication unit.

On the other hand, each TCLA (TCLA: Transcoder Control and Link Assembly) boards 462 and 463 of the TCB blocks 462 and 463 have a vocoder function and a gateway function for connection with the PBX, and can accommodate. The number of TCLA boards depends on the number of arcs available.

The TCLA boards 462 and 463 convert the subscriber traffic signals, such as 8k / 13k QCELP and 8k EVRC, received through the ACMA 461 into 64k PCM data through the DSP signal or perform a reverse function thereof.

There are 16 DSPs used per TCLA board (462, 463) and can vocode 8 channels of data per DSP. The TCLA boards 462 and 463 perform a data exchange function between the E1 / T1 channel and the DSP through an internal time switch.

One TCLA board (462, 463) accommodates 120 channels of vocoder and provides four E1s or five T1s. Provide 7 signal channels.

On the other hand, the second block 470 of the second shelf 450, the MCB block (Main control block) is a BHPA board (473, 474) and the BAN equipped with a BMP (BSC Main Block) responsible for the overall control of the private base station controller, ATM Switch Fabric Board Ass'y (ASFA) boards 475 and 476 which perform ATM switch operation by providing ATM Switch Fabrics of ATM Switch Block (ASB), and alarm information generated in each block of the private base station controller. It consists of the Hardware Alarm Colection Board Assmbly (HACA) board 477 which mounts the hardware alarm collecting block (HAB) to collect.

In addition, when transmitting or receiving an ATM cell from a board belonging to the MCB block 470, the ATM cells are multiplexed or demultiplexed in the opposite direction, and the tags are connected for each connection. An ACMA (ATM Mux / Demux Board Ass'y) board 471 is provided.

The MCB block 470 is redundant of the ASFA boards 475 and 476, the BHPA boards 473 and 474, and the ACMA boards 471 and 472 for the reliability of the product. The redundancy path is Fast Ethernet. The status of each board is informed to the other board so that the failure can be detected.

The ASFA boards 475 and 476, which are ATM switching boards, and the HACA board 477, which receive alarms from each block of the private base station controller, are not equipped with their own processors, so the BMPs 473 and 474 use the Industry Standard Architecture (ISA). The ASFA boards 475 and 476 are controlled through the bus to perform ATM switch operations, and the HACA board 477 is controlled through the ISA bus to read alarm information of each block.

The BMP Main Processor (BMP) consists of a Main Configuration Handler (MCH), an IPC for interprocessor communication, an ATM that performs data transmission and reception in asynchronous transmission mode, and a database (DB). And is mounted on the BHPA boards 473 and 474.

In addition, the above-described boards (421 to 424, 431 to 439, 461 to 466, 471 to 477) are mounted on a shelf backplane (not shown), and each of the boards (421 to 424, 431 to 439, 461 to 466, 471-477 exchange various data via shared buses installed in the shelf backplane. At this time, the shared bus is a single 16-bit ATM cell bus for transmitting ATM cells between the boards 421-424, 431-439, 461-466, 471-477, and the MCB 470. It consists of a maintenance data bus (OAM Data Bus) for exchanging various data for performing maintenance functions, and a local bus (transmission) of other local data.

Meanwhile, boards 421 to 424, 431 to 439, 461 to 466, and 471 to 477 mounted in a private base station controller download an operating system (OS) and necessary programs from a wireless system manager (WSM) (not shown). It loads the operating system (OS) and necessary programs from the BSM to the BMPs (475, 476), and each board (421-424, 431-439, 461-466, 471-477) from the BMP (475, 476). ) To load the OS and programs.

At this time, the main configuration information processing unit of the BMP (475, 476) is the board 421 ~ to be booted at the boot of each board (421 ~ 424, 431 ~ 439, 461 ~ 466, 471 ~ 477) of the private base station controller Search board configuration data of 424, 431 ~ 439, 461 ~ 466, 471 ~ 477 in the database.
Then, the OS used in each of the boards 421 to 424, 431 to 439, 461 to 466, and 471 to 477 is checked.
The main configuration information processing unit of the BMPs 475 and 476 transmits the confirmed OS information to the boards 421 to 424, 431 to 439, 461 to 466, and 471 to 477. The boards 421-424, 431-439, 461-466, and 471-477 are equally applicable.

Here, the board configuration environment information (PCI Configuration) that the BMPs 475 and 476 refer to in the database for loading the OS is set on the back board on which the boards 421 to 424, 431 to 439, 461 to 466, and 471 to 477 are mounted. It may include a number, a backboard ID, and a slot ID.

The board number consisting of the board setting environment information is used to distinguish the boards on which the boards are mounted. The boards are arranged in order of 0, 1, 2, 3, etc. for each back board in the rack. As an example, in connection with the present invention, the backboard number of the first shelf may be 0, the backboard number of the TAB block 460 may be 1, and the backboard number of the MCU block 470 may be 2.

In addition, the slot ID is an identifier for identifying a slot in which the board can be mounted on the backboard, and is in the order of 0, 1, 2, 3 .... from the left.

Accordingly, the boards 421 to 424, 431 to 439, 461 to 466, and the boards 421 to 424, 431 to 439, 461 to 466, and 471 to 477 to boot from the BMPs 475 and 476 at boot time. In order to load the desired OS by the 471 to 477, first, check the backboard number of the boot boards (421 to 424, 431 to 439, 461 to 466, and 471 to 477).

After checking the backboard number of the boot board, the OS corresponding to the slot number is loaded. The user must designate and manage the OS corresponding to the backboard number and the slot number in the database of BMPs 475 and 476 in advance. For example, you can manage the database as shown in Table 1.

Backboard Number (Backboard ID) / Slot Number 0 One 2 3 4 5 6 7 8 9 10 11 12 0 GCRU MCDA ACMA BHPA (ATP) BHPA (ATP) BHPA (ATP) BHPA (ATP) BHPA (ATP) BHPA (ATP) BHPA (ATP) BHPA (ATP) BHPA (ATP) BHPA (ATP) 1 (02) ACMA TCLA TCLA AETA AETA AETA 1 (03) ACMA TCLA TCLA TCLA AETA AETA 1 (042) ACMA TCLA TCLA TCLA TCLA AETA 2 ACMA ACMA BHPA (BMP) BHPA (BMP) ASFA ASFA HACA

If the BMPs 475 and 476 want to load the OS on a board corresponding to slot ID 5 of the backboard number 0, the BMPs 475 and 476 confirm that they are BHPA boards for ATP by referring to (Table 1). Load the OS.

On the other hand, there is a backboard ID to be noted in (Table 1). This backboard ID is designated to change the board configuration of the TAB block 460 according to the installation environment when the private base station controller is installed in a building. .

That is, the installer of the private base station controller may increase or decrease the TCLA boards 462 and 463 and the AETA boards 464 to 466 in consideration of the installation environment. In this case, the board name according to the slot ID in the board configuration information setting environment in the database is used. It is used to make it easy to change the board configuration by changing the slot ID rather than changing everything.

For example, if the backboard ID is designated by the number of TCLAs mounted on the backboard, the BMPs 475 and 476 recognize the backboard ID and determine that the number of TCLA boards is mounted from the second board of the second backboard to the number corresponding to the backboard IDs. The OS can be loaded on the corresponding number of TCLA boards, and subsequent boards can be recognized as AETA boards and loaded with the corresponding OS.

Although the loading on an operating system (OS) has been described in detail here, the same method may be used to load a necessary program or transmit a control signal.

6 is a flowchart of a control method of a private base station controller of FIG. 4.

First, when power is supplied to the private base station controller (step S110), the BMP performs a power on self test (POST) to check what devices are on the board and whether they operate properly (step S112).

Next, if the hardware of the board is not abnormal, the boot loader requests a selection key value for selecting a board on which to boot, and searches whether there is a board to be booted (step S114).

If the board to be booted is found in step S114, the board configuration environment information (PCI Configuration) of the corresponding board is searched (step S116).

At this time, if the search result backboard number is 1, it is determined that the board corresponds to the TAB block and the backboard ID is searched (step S120). After that, it checks the OS to be mounted on the board according to the detected backboard ID, and when the OS used by the board is confirmed, the boot loader is jumped to the boot area of the database (step S122) to read the OS and read the main memory of the board. (Step S124).

Then, the OS is read from the main memory of the board and booting is performed (step S126). After that, if there are more boards to be booted, the flow proceeds to step S24, and if not, ends (step S128).

On the other hand, if the backboard number is not 1, the board is not a board corresponding to the TAB block, and the slot ID is checked. If the OS is used by the board, the boot loader is jumped to the boot area of the database (step S122). It is read and loaded into the main memory of the board (step S124).

Then, the OS is read from the main memory of the board and booting is performed (step S126). After that, if there are more boards to be booted, the flow proceeds to step S24, and if not, ends (step S128).

Although the process of loading an OS has been described here, the same method can be used when loading a program required for each board or transmitting a control signal.

In the above-described embodiment according to the present invention, only the private base station controller is described, but it can be applied to the public network base station controller in the same way that any person skilled in the art can understand, the scope of the present invention right Is not limited to the specific embodiments, it should be interpreted by the appended claims.

According to the present invention as described above, by developing a small pBSC can be more aggressively to meet the market demand, there is an effect that can build a lineup of products with the existing large-capacity In-Building Solution.

In addition, according to the present invention, it is possible to realize significant cost savings by sharing a GPS receiver without mounting a GPS receiver in each of the pBSC and pBTS systems. It is effective to make use of it.

In addition, according to the present invention, by providing a flexible design structure that can share the same backboard to add or subtract the board according to the capacity can accommodate the increase in subscribers without additional investment, so that a significant cost reduction effect It is effective.

Claims (14)

In a base station controller, A network synchronization clock distribution block (NSB) for generating a plurality of system synchronization clocks and network synchronization clocks using a synchronization clock received from a GPS satellite and distributing them to respective internal shelves; An air termination processor (ATP) block for matching with a mobile terminal in a wireless environment; a) an ALB (ATM E1 / T1 Link Block) providing an interface between networks, b) a TAB block for implementing a TCB (TransCoder Bank) block for processing voice compressed signals transmitted through the base station from the mobile terminal and PCM data transferred to the exchange; And The board configuration flexibility is provided for the NSB block, the ATP block, and the TAB block by loading a corresponding OS using a backboard identifier, and including a main control block (MCB block) for switching signals and collecting all generated alarm signals. Miniaturized base station controller. The method of claim 1, The NSB block is, GPS Clock Receiver Unit (GCRU) board that receives synchronous clock and time information from GPS satellites, provides the received time information to each internal shelf, and generates and outputs a number of system synchronous clock signals based on the received synchronous clock. ; And Receives a plurality of system synchronization clock signals from the GCRU board and distributes them to each shelf, and generates a plurality of network synchronization clocks using the system synchronization clock received from the GCRU to distribute the synchronization clock signals to the shelf. Miniaturized base station controller provided with board configuration flexibility including a Main Clock Duplication Assembly (MCDA) board. The method of claim 1, The ATP block is, After the call is established with the mobile terminal, a plurality of BHPA (BSC High Performance Processor Bord Assembly) boards for processing a signal received with the traffic data and performing an RLP or MAC function for the data call; And ATM Cell Mux / Demux Board Assembly (ACMA) for multiplexing and outputting ATM cells input from the BHPA, demultiplexing the transmitted ATM cells to the BHPA, and performing ATM communication with a UTOPIA interface Miniaturized base station controller that provides flexibility in board configuration including a board. The method of claim 3, The plurality of BHPA board, A first BHPA board for processing a control signal for traffic data; A second BHPA board for processing circuit data; And A miniaturized base station controller provided with flexibility in board configuration including a third BHPA board interworking with a public data switching network (PDSN) for packet data processing. The method of claim 1, The TAB block is, At least one AETA (ATM E1 / T1 Interface Boaed Assembly) for constructing the ALB block, including an E1 interface unit, an ATM layer interface unit, and a processor-to-processor communication unit, and transmitting / receiving an ATM cell through a network connected by E1 / T1. board; At least one TCLA for converting the voice compressed signal transmitted from the mobile terminal through the base station to PCM data and converting the voice compressed signal to the mobile terminal through converting the PCM data transmitted from the exchange into a voice compressed signal ( Miniaturized base station controller with flexibility in board configuration including Transcode Control and Link Assembly boards. The method of claim 5, The TAB block is, Miniaturized base station controller with flexibility in board configuration including three AETA boards and two TCLA boards. The method of claim 5, Miniaturized base station controller providing flexibility in board configuration including two AETA boards and three TCLA boards. The method of claim 5, The TAB block is, Miniaturized base station controller providing flexibility in board configuration including one AETA board and four TCLA boards. The method of claim 1, The MCB block is, Controls the loaded program by loading a corresponding OS and program using a backboard number, a backboard ID, and a slot ID for the NSB block and the ATP block, and a backboard number, a backboard ID, a slot ID, and a board for the TAB block. A BHPA board mounted with a BMP Main Block (BMP) for controlling a loaded program by loading an OS and a program using a backboard ID determined according to an implementation structure of the; An ATM Switch Fabric Board Assembly (ASFA) board having ATM switch fabrics to perform ATM switch operations; And A miniaturized base station controller provided with flexibility in board configuration, including a hardware alarm collection board assembly (HACA) board equipped with a hardware alarm collecting block (HAB) for collecting alarm information generated in each block of the base station controller. The method of claim 9, The BHPA board, the ASFA board, and the HACA board, each of the miniaturized base station controller is provided with flexibility in the board configuration having a redundant configuration. The method of claim 10, The BHPA board, the ASFA board, and the HACA board having the redundant configuration are provided with the flexibility of a board configuration connected to Fast Ethernet. The method of claim 9, And the backboard ID is provided with flexibility in board configuration that matches the number of mountings of the TCLA board. In the base station controller control method, When power is supplied to the base station controller, checking a state of a board by performing a power on self test (POST); The BMP searching for a board to be booted and reading board configuration information (PCI Configuration) for the found board from a database; Determining whether a board to be booted belongs to a TAB block by checking a backboard ID and a slot ID of the read board setting environment information; a) if the board to be booted belongs to the TAB block as a result of the determination, check the corresponding OS by using the backboard number and ID in the board configuration environment information, load the identified OS onto the board, and perform booting; b) As a result of the determination, when the board to be booted does not belong to the TAB block, the OS is checked by using the backboard number and slot ID in the board setting environment information and the booting is performed by loading the identified OS into the board. A control method of a miniaturized base station controller provided with flexibility in board configuration comprising the step of. The method of claim 13, The step of reading the board setting environment information from the database, The BMP requires a selection key value for selecting a board to boot from if the board hardware is intact, and searching for whether a board to be booted exists. When the board to be booted is found as a result of the search, miniaturization of the base station controller is provided with flexibility in board configuration comprising the step of searching the board setting environment information of the board in the database.

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